In the OE market, UFI is the leader in filtration. production plants, over , employees in countries around the world. Present everywhere, .Technology, Innovation, Performance. This success story started in Italy in and continued with the global expansion which has resulted in UFI FILTERS becoming .This site uses co.es to manage, improve and personalize your browsing experience of the website. For more information about how we use co.es and how to remove .The Unscented Kalman Filter for Nonlinear Estimation Eric A. Wan and Rudolph van der Merwe Oregon Graduate Ins.ute of Science Technology NW Walker Rd .